Não informado. (2018). Economic Planning in Free Societies. Academic Publishing.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Economic Planning in Free Societies. Mount Royal, Canada: Academic Publishing, 2018.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Economic Planning in Free Societies. Academic Publishing, 2018.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.